Oscillating mechanism for electric fans



w. 6. WINTER AND H. men. OSCFLLATING MECHANISM FOR ELECTRIG FA NS. APPLICATION FILED MAY7. 1919.

1,347,981. PatentedJuIy 27,1920.

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fizzle/222215 Mill/am 6. 14 0150" flererl [E221 W. G. WINTER AND H. I. HNCH. oscnmme MECHA'MSM FOR uscrmc FANS.

Patented July 27, 1920,

APPLICATION FILED MAY 7. l9l9.

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- ,UNITED STATES PATENT. OFFICE.

WILLIAM (3. WINTER AND HERBERT I. FINCH, or sT. LOUIS, lvnssounr,v AssIcNons To THE EMERSON ELECTRIC MANUFACTURING COMPANY, on ST. LOUIS, MISSOURI,

A CORPORATION OF MISSOURI.

oscILLATING MECHANISM FOR ELECTRIC FANS.

Specification of Letters Patent. I Patented uly 1920,

Application filed May 7, 1919. Seria1 No.295,341.

To' all whom it may concern:

Beit known that we, WILLIAM G. WVINTER and HERBERT I. FINCH, citizens of the United States, residing at the city of St. Louis, State of Missouri, haveinvented a certain new and useful Improvement in Oscillating Mechanism. for Electric'Fans, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same. Y 1

This invention relates to a certain new and useful improvement in oscillating mechanism for electric fans, and particularly to the means for adjusting said oscillating mechanism, being designed particularly as an improvement upon. United States Letters Patent No. 1,256,121, granted to Herbert I. Finch and Thomas M. Meston under date of February 12, 1918. v y In this invention the oscillatory movement of the fan may be varied or eliminated, as desired, and said adjustment can bemade while the fan is in operation or stationary. The principal object of this invention is to provide a simple and easily adjustable oscil- 'lating mechanism having few parts and which can be economically manufactured. Various other objects of our invention will be obvious, or pointed out hereinafter, refer: ence being made to the accompanying drawings," in which: g

Figure 1 is a rear elevation of the fan motor and .a vertical cross-section through the oscillating mechanism for said fan. Fig. 2 is a side elevation of the motor and a vertical cross-section ofthe oscillating mechanism taken'at right angles to Fig. 1.

Fig. 3 is a horizontal cross section taken approximately on. line o,3 of Fig. 1.

' ig..4,is a top plan view of the adjusting device. 3

Fig. 5 is a detail perspective view of the rotary member.

Fig. 6 isa detail perspective view of the adjustable block.

Fig. 7 isa perspective of the casing or cap piece. Y f

Fig. 8 is a detail view ofa pivotal member carried by the adjustable block.

Fig. 9 isla vertical cross-section through the adjusting'device and showing means for retaining the casing inzits adjusted position on the rotary member.

,8 through which the shank of screw 7 passes.

Referring to the drawings, M indicates a motor mounted forrotary movement. on a stationary'base Band provided with a .fan 1n the usual manner.v Carried by said motor is a suitable housingl in which is located a I reduction gearing 2 operatively' connected with the rotor shaft of motor M'and having a shaft 4 to which is fixed rotary member 5.

Thelower face of'the rotary member is provided with a'transverse groove 5 designed to accommodate an adjustableblock 6 whose shape, is such as to permit of its sliding movementlongitudinally in groove 5 across 7 the axls of the rotary, member 5. Formed in the adjustable block 6 is a slot 6, and fixed to said block is a pin or screw'7. Block 6 is retained in groove 5 by easing or cap piece'8 havlng an upwardly extending flange 8 wh ch 1s knurled or roughened and surrounds and engages the annular flange 5* on;

rotary member 5. The capfpiece 8 has an 'eccentrically located and upwardly projecting pin 8 which enters and cooperates With slot 6 inblock 6. Cap piece 8 has a curved slot the pin; or

Screw 7 acts as a pivotal mounting for one end of link 9, the other end of which is pivotally connected to the stationary support on base B. The cap piece 8 is looselycar'ried by member 5 and is adapted to be manually rotated around said member 5, the annular flange 5 providing a bearing surface for the inwardly turned edge of the upwardly extending flange 8 of cap piece 8.

The} arrangement of p1n 8 on; the: cap

piece, and slot 6*, in block 6, is suchJthat the 7 rotation of the cap piece in one direction will move block 6 and screw 7 toward theaxis of the rotary member androtation of the cap piece in; the opposite direction will cause, the

- helps to maintain it in its adjusted position. In the operation of our device, the rotary. -motionof the1roton shaftis transmitted by the reduction gearing to shaft 14 and rotary member 5. The rotary motion of the rotary member will exert pull and thrust moments on-the link and willcause the link, piyotally connected to the station- ;fan will cease. V r a r I In assembling our device, the adjustable block is positioned in the longitudinal groove of the'rotary member, and the cap ary base to move inan'arc concentric with the stationary pivotof said link thereby causing the rotary member itself and the 'moto'r rotatably mounted in the stationary base and supporting the housing of the rotary member, to oscillate.

from the axis of the rotary member. WVhen the screw 7 on block 6 is brought in coaxial alinementwith the axis of the rotary member, the rotary member no longer exerts any pullland thrust moments on the link and the oscillatory movement of; the

piece is placed in position with the pin carried by said cap piece arranged in theslot "in theadjustableblock; The edge of the upwardly extending flange is inwardly and downwardly CllSPOSGClSO as to'engage the annular flange-of theirotary member and thereby hold the cap-"piece rotatably on the rotary memberand retain the adjustable block in the longitudinal groove. v

The device when assembled forms, a pen manent articulated mechanism wh'ich'is not 'susceptible of being tampered with and placed out ofcommission; The block 6 is 'adjustablegin a straight radial' movement lengthwise of the slot 5 and the pitman "pin carried thereby may be adjusted toward and from the center of the'axis of rota-" tion of the block 5; The knurled "edge of the rebent housing '8' is preferably formed operate with'the folded edge of the knurled housing, thus avoiding the necessity of any teeth 'or'notches forthespring.

- We donot wish to limit o'urselvesto the device described and illustrated as various modifications may, be 'made and substituted withoutfdeparting "from thespii'it of the invention" f- 'l Vhat'we claim is:

51. In "an oscillating mechanism for fans, a rotary member, means for driving the same,' anad ustable member carried in-the lower end of said rotary member, means pivotally connecting saidi'adjustable membeer with a stationary support, ahousing in'closing the lower end'ofjsaid rotary member 'and foldedthereover', and adapted'to r a 'rotarymember-havinga transverse slot move said adjustable "member'towar'd' or away fromthe'axisof saidrotary member.

2.:In an oscillating mechanism for fans,

in its'lower face, means for rotating said rotary member, an adjustable block located within-said slot, a support, alinkpivotally connected to'said support and said adjustable block, and an adjusting member engaging said block and adjustably supported on said rotary' member' by being folded thereoverand adapted to move the point of pivotal connection of'the link to the block toward or away from the axis of rotation of the rotary member;

In a fan, an oscillating mechanism comprlslng a rotary member, means forrotating saidxmember, an adjustable block adj ustably mounted on said rotary member surrounding the lower end of said rotary member, sald casing belng'ln operative'em gagement with said block and'designed to move said block toward and away" from the axls of rotation. 7

ing same, a support, a movable block 10-. 1 cated within said slot, a link pivotally connected at one endto said block andat its other end to the support, a flanged casing by having its flange folded thereon and 5. Ina fan, an oscillating mechanism-comprising a rotary member, means for rotating the same," a support, a movable 'member'carried bysaid rotarymember, aflink having one end-pivotally' connected to p the movable member and the other to said support, areasa ing inclosing the lower'end of said rotary after the k'nurl'in'g on the housing 1s made because in this manner the sprmg'can 60-,

member and a'dju stably supported thereon, said rotarymember engaging said movable member and adapted'to move ittoward and v away from the 'axisl of the'rotary: member,

and means for retaining thecasingr in itsadjusted' position.

'6. In an oscillating mechanism:,=a rotatfing member having a flange at the lower end, a groove ln the lower 'face' of said flanged lower end, said groove intersecting the axis of rotation of said flanged rotating member, a "sliding block arranged within said groove, a housing: rotatively mounted' with r'espect'to said flanged rotating mem her, for holding said block imposition, said housing having an openlng, a stud passing 7. An oscillating mechanism for fans comprising a rotating member havlng a trans- -versely disposed groove .in-its *underface, a

block arranged in said groove and c'arrying lug or projection designed-to be imoved 7 toward or away fromp-the axis of rotation of -'said rotating member,iahousing inclosing the lower end of said rotating member and mounted thereon, sa1d rotating member having means for engagement with said block whereby the same may be adjusted, said housing having a knurled edge embracing the rotating member, said rotating member having a kerf, and a spring arranged in said kerf and engaging the knurled edge of said housing.

8. The combination of a rotating member having a groove intersecting its axis of rotation, a sliding block arranged Within said groove and having a transversely disposed slot, a housing arranged on said rotating member and having a lug engaging the slot in said block said housing having an opening, and a pin or stud on said block projecting through the opening in said housing.

In testimony whereof We hereunto afiix our signatures this 5th day of May, 1919.

WILLIAM G. WINTER. 'HERBERT I. FINUH. 

